Study of Affecting Factors on Organizational Commitment of Staff Of National Petrochemical Company

The purpose of this study is to determine organizational commitment (OC) of staff of National Petrochemical Co. (NPC), to prioritize affecting factors on organizational commitment, and to utilize the results to increase the level of employees’ commitment. OC simply means belief to the organizational values and goals, sense of loyalty and emotional dependence to it, and moral obligation and desire to remain in the organization. On basis of Allen and Meyer theory (1990), OC has three components: affective, continuous, and normative. This is a descriptive research from correlation type. A 2198 sample was selected by random sampling method out of 22 NPC affiliated companies and 1813 questionnaires were completed and returned. The results were analyzed by statistical methods of Structural Equations Modeling and Lisrel software. The results indicated that job satisfaction was the most effective element on OC with the strongest positive direct relation. Then, sense of organizational justice variable was the most positive and direct effect on OC. Comparison of results based on Structural Equation Modeling analysis with the previous researches shows the conceptual pattern based on system and structural theories was supported by the data.